Aller au contenu principal

Case studiesOur projects, backed by numbers.

What we actually did, what it cost and what it changed, with measurements where we have them.

Soiled solar panels before cleaning in Liestal

Case study · Liestal (BL)

After cleaning, the system produces clearly more.

On 12 October, under a clear sky, it topped out around 4.2 kW. On the 15th, after our visit, it passed 5 kW several times despite a changeable sky. With a video of the visit and readings from the monitoring app.

Before · 1:20 pm
4.18 kW
After · 1:20 pm
6.94 kW
Read the case study →

Case studies

Three projects in detail.

Beyond the images: what we actually do, what it costs, what it produces, and how much it saves year after year.

180 m² family villa in Puidoux (VD)

Replacement of 1998 oil boiler + 12 kWp on-roof solar installation + coupling with Daikin Altherma air-to-water heat pump.

Gross investment
CHF 62,000
Cantonal subsidies
CHF 12,500
Tax deduction
CHF 13,400
Net effective cost
CHF 36,100
Annual savings
~CHF 3,200
Estimated ROI
11 years

House moved from EPC class E to class B. Heating carbon footprint divided by 4. Winter comfort significantly improved.

6-unit condominium in Bussigny (VD)

Collective 30 kWp solar installation with shared self-consumption (RCP) and buffer storage. Approved by a simple majority at the owners' assembly.

Total investment
CHF 68,000
Combined subsidies
CHF 16,500
Net after subsidies
CHF 51,500
Cost per unit
~CHF 8,600
Self-consumption
78%
Annual production
30 MWh

Common electricity charges reduced by 65% in the first year. All units agreed to join the RCP scheme, with automated monthly billing.

New build in Tannay (VD)

New construction with roof-integrated solar (9 kWp), geothermal heat pump (150 m boreholes), 10 kWh lithium-ion battery, EV charger coupled to solar.

Gross investment
CHF 118,000
Cantonal subsidies
CHF 16,000
Tax deduction
CHF 27,500
Net effective cost
CHF 74,500
Summer autonomy
100%
EPC class
A

Minergie-A certified building. Near-autonomous 8 months out of 12. Electric car charged primarily on solar surplus.

Swiss landscape at sunset

Free quote

Free energy studyfor your home,no obligation.

On-site visit, consumption analysis, detailed cost simulation. Full quote delivered within seven days. If your project is not technically or financially viable, we tell you straight.

  • 7 daysDetailed quote turnaround
  • FreeOn-site study, no commitment
  • 100 %Subsidy applications handled for you
Prefer to talk? 0800 800 840

Study request

We will call you back within 48 hours.

By submitting this form, you agree to be contacted by our team. No data is shared with third parties. See our privacy policy.